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Vera Rubin and Dark Matter

Excerpts from The Ring of Truth, Episode 6: Doubt, hosted by Philip Morrison https://www.youtube.com/watch?v=xhfUfxeh9Lg

From  John Terning 0 likes 8 plays 0  

HYD151: Velocity Measurement, part 2

This 35-minute presentation explains the various technologies available to measure velocity in a river.

From  Gregory Pasternack 0 likes 15 plays 0